Baker&#39;s oven.



, No. 860,151. PATENTED JULY 16, 1907.

. M. RICHARD & w. scum BAKBRS OVEN. APPLIOATIOK FILED 32 15. 1904.

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PATENTED JULY 16, 1907. 7 RD & W. SCOTT.

ERS OVEN. V

FILED SEPTJE. 1904.

| i l I I l I l I l I I I l I 1 l I l I l I l r I l I l l l l l l 4 l I l l I l l I I l I I I l l I I 4 I l I l l l l I I I I IIVI MURDOOI-I RICHARD AND WILLIAM SCOTT, OF GLASGOW, SCOTLAND.

BAKERS OVEN.

Specification of Letters Patent.

Patented July 16, 1907.

Application filed September 1 selial 24.508-

To all whom it may concern:

Be it known that we, MURDOCH RICHARD and WIL- LIAM SCOTT, subjects of the King of England, residing at Glasgow, Scotland, have invented certain new and useful Improvements in Bakers Ovens, of which the following is a specification.

This invention relates to bakers ovens and it has for its object to improve their construction.

In the annexed drawings, Figure 1 is a longitudinal section (takenv on the line 1 1 Fig. 2), Fig. 2 is a cross section (taken on the line 2 2 Fig. 1). Fig. 3 is a front elevation of the improved oven, Figs. 4 and 5 are horizontal sections on lines 44, 55 respectively of Fig. 1.

Referring to the drawings, whereon the same reference letters Wherever repeated indicate the. same parts. The oven a is built so as to form an interior chamber having the central part c of its floor longitudinally of the chamber raised above the remainder. Under the raised part c of the floor at the forward end of the oven is the furnace b whence the flue d extends under the raised part of the floor to the back of the said chamber.

Near the back of the said chamber and spaced therefrom a cross wall 70 is built extending from the floor up to near the crown of the chamber. The space behind this wall forms a vertical passage which is a continuation of the flue (I, this passage opening into the re mainder of the chamber above the said wall It at n.

p The draw plate 9 extends across the chamber in proximity to the raised part of the floor and thus, when in place substantially roofs in the spaces 1" 1' which extend longitudinally of the oven on each side of the raised part c of the floor. The space within the chamber above the draw plate and in front of the cross wall 7c forms the baking chamber proper. The outlet flue f has its entrance f 1 at the interior of the chamber at one side thereof and near the front and at such a distance above the floor that its top will be slightly above the level of the bread on the draw plate g so that the hot gases (from the furnace) which enter at the back of the baking chamber proper will pass along just over the top of the bread to the outlet flue. The draw plate 9 slides on the roller. shaft h as usual, and i i are its front supports which run on the wheels j.

It will be seen that the entrance f to the outlet flue f is 'of such size and so arranged that it is partially above and partially below the draw plate 9 and that it is provided with damper frame 0 having a damper plate p working in groove 11. c The damper is so placed that it can be made to close or partially close the upper part 01 the entrance f 1 leaving the lower part open.

A number of lateral flues q branch oft from the furnace and the centrally placed furnace flue 12 preferably in pairs at intervals apart into the longitudinal spaces 1" at each side of the raised central part c of the floor. The fines q are provided with sliding regulating dampers g which can be manipulated from the lront of the even by means of rods whose handles are shown at s.

Supportedby the cross wall 70 and also by cross bars or irons is a canopy m which as shown at Fig. 1 extends forward from the cross wall 7c for a short distance so as to be over the extreme inner end of the draw plate and thereby protect the bread at this end from being burned. This canopy may be made of fireclay slabs supported by T irons.

Dampers t are, or may be, arranged in the part e of the flue d and those dampers may be manipulated by rods 14. which pass along the spaces 1" in the floor, to the front of the oven.

'0 is the usual counter-weighted door and o are small sliding doors therein which can be used when baking Vienna bread.

to is the light box. a: x are the handles of the rods for manipulating the back dampers and x the chain for manipulating the usual main damper.

With an oven constructed as above described when the lateral flues q are closed the flame from the fur-- nace b passes along the flue d and its continuation a (the dampers i being open) and over the cross wall 70 and the canopy m. The hot gases pass just above the bread on the draw plate to the entrance f 1 of the outlet flue f at the side of the oven.

It is found in practice that it is of great advantage to have alow entrance to the outlet flue in order to draw down the heat and properly color the bread. The outlet can be regulated by the sliding damper o.

By manipulating the dampers for thelateral flues q the heat can be distributed as desired throughout the baking chamber. When any pair of these flues is opened the heat or some of it passes through such pair and into the space 1* and up under and at the side of the draw plate.

When the damper 0 is closed the top heat passing over the cross wall It and canopy m is drawn down below the level of the draw plate and passes over and around the bread. This is required when baking Vienna and other small breads.

Owing to the thin and narrow raised part c of the fioor and the lateral fiues q and spaces r r a good bottom heat can be given while sufficient top heat passes over the cross wall is and canopy m.-

Whatwe claim as our invention and desire to secure by Letters Patent of the United States is:-

1. A bakers draw plate oven having in combination a. furnace, an oven chamber, a draw plate, a furnace flue ar ranged longitudinally of the oven below the floor and passing to the back of the oven chamber and thence up into that, part of the oven chamber which forms the baking chamber proper above the rear end of the draw plate, lateral flues leading from the furnace and furnace flue into the oven chamber below the draw plate and an outlet from the interior of the oven chamber near the front and near the floor of the oven chamber.

2. A bakers draw plate oven having in combination a furnace, an oven chamber, a draw plate, a centrally raised floor, a flue contained in said raised floor extending to the back of the oven chamber, a cross wall dividing off a space from the oven chamber to form a continuation of the said flue and a canopy extending from said cross wall forwardly into the part of the oven chamber which forms the baking chamber proper above the draw plate, said fiue having lateral openings into spaces on each side of the raised floor, means for controlling these openings, and an outlet from the interior of the oven chamber near the front and near the floor of the oven chamber. V

3. A bakers draw plate oven comprising in combination a chamber having longitudinally thereof a raised floor narrower than said chamber, leaving spaces on each side thereof in the lower part of the chamber, a flue longitudinally beneath said floor, and having lateral openings at intervals to the said spaces in the lower part of said chamber, means for controlling said openings, a draw plate above the raised floor and extending above said spaces, a

v furnace connected to said flue and an outlet flue in the wall of the chamber having its entrance near the front of the said chamber partially above and.partially below the draw plate.

4. In a bakers draw plate oven 21 structure comprising in combination a chamber having longitudinally thereof a raised floor narrower than said chamber, leaving spaces on each side thereof in the lower part of the chamber, a flue longitudinally beneath said floor and having lateral openings at intervals to the said spaces in the lower part of said chamber, means for controlling said openings, a furnace connected to said flue, a draw plate above the raised floor and extending above said spaces, a cross wall at the rear end of said floor spaced from the back of said chamber and forming a continuation of said flue and an outlct'flue having its entrance near the front of the said chamber.

5. A bakers draw plate oven comprising in combination a chamber having longitudinally thereof a raised floor narrower than said chamber leaving spaces on each side thereof in the lower part of the chamber, a'flue longitudinally beneath said floor, and having lateral openings at intervals to the said spaces in the lower part of said chamber, means for controlling said openings, a draw plate above the raised floor and extending above said spaces, a furnace connected to said flue, and an outlet flue in the wall of the chamber having its entrance near the front of the said chamber partially above and partially below the draw plate and means for regulating that part of the said entrance which is above the. draw plate.

In witness whereof we have signed this specification in the presence of two witnesses.

MURDOCH RICHARD. WILLIAM SCOTT.

Witnesses JNO. S. STIELL, ALFRED B. CRoLL. 

